Javascript 如何在paper.js中向这些球对象插入文本?
我想给这个()项目中的每个球添加一些单字文本 例如,python写在一个球上,javascript写在另一个球上 我不知道这有可能吗?如果可能的话,如何做到这一点 下面是生成它的纸质脚本代码Javascript 如何在paper.js中向这些球对象插入文本?,javascript,animation,paperjs,Javascript,Animation,Paperjs,我想给这个()项目中的每个球添加一些单字文本 例如,python写在一个球上,javascript写在另一个球上 我不知道这有可能吗?如果可能的话,如何做到这一点 下面是生成它的纸质脚本代码 function Ball(r, p, v) { this.radius = r; this.point = p; this.vector = v; this.maxVec = 15; this.numSegment = Math.floor(r / 3 + 2);
function Ball(r, p, v) {
this.radius = r;
this.point = p;
this.vector = v;
this.maxVec = 15;
this.numSegment = Math.floor(r / 3 + 2);
this.boundOffset = [];
this.boundOffsetBuff = [];
this.sidePoints = [];
this.path = new Path({
fillColor: {
hue: Math.random() * 360,
saturation: 1,
brightness: 1
},
blendMode: 'lighter',
});
for (var i = 0; i < this.numSegment; i++) {
this.boundOffset.push(this.radius);
this.boundOffsetBuff.push(this.radius);
this.path.add(new Point());
this.sidePoints.push(new Point({
angle: 360 / this.numSegment * i,
length: 1
}));
}
}
Ball.prototype = {
iterate: function() {
this.checkBorders();
if (this.vector.length > this.maxVec)
this.vector.length = this.maxVec;
this.point += this.vector;
this.updateShape();
},
checkBorders: function() {
var size = view.size;
if (this.point.x < -this.radius)
this.point.x = size.width + this.radius;
if (this.point.x > size.width + this.radius)
this.point.x = -this.radius;
if (this.point.y < -this.radius)
this.point.y = size.height + this.radius;
if (this.point.y > size.height + this.radius)
this.point.y = -this.radius;
},
updateShape: function() {
var segments = this.path.segments;
for (var i = 0; i < this.numSegment; i ++)
segments[i].point = this.getSidePoint(i);
this.path.smooth();
for (var i = 0; i < this.numSegment; i ++) {
if (this.boundOffset[i] < this.radius / 4)
this.boundOffset[i] = this.radius / 4;
var next = (i + 1) % this.numSegment;
var prev = (i > 0) ? i - 1 : this.numSegment - 1;
var offset = this.boundOffset[i];
offset += (this.radius - offset) / 15;
offset += ((this.boundOffset[next] + this.boundOffset[prev]) / 2 - offset) / 3;
this.boundOffsetBuff[i] = this.boundOffset[i] = offset;
}
},
react: function(b) {
var dist = this.point.getDistance(b.point);
if (dist < this.radius + b.radius && dist != 0) {
var overlap = this.radius + b.radius - dist;
var direc = (this.point - b.point).normalize(overlap * 0.015);
this.vector += direc;
b.vector -= direc;
this.calcBounds(b);
b.calcBounds(this);
this.updateBounds();
b.updateBounds();
}
},
getBoundOffset: function(b) {
var diff = this.point - b;
var angle = (diff.angle + 180) % 360;
return this.boundOffset[Math.floor(angle / 360 * this.boundOffset.length)];
},
calcBounds: function(b) {
for (var i = 0; i < this.numSegment; i ++) {
var tp = this.getSidePoint(i);
var bLen = b.getBoundOffset(tp);
var td = tp.getDistance(b.point);
if (td < bLen) {
this.boundOffsetBuff[i] -= (bLen - td) / 2;
}
}
},
getSidePoint: function(index) {
return this.point + this.sidePoints[index] * this.boundOffset[index];
},
updateBounds: function() {
for (var i = 0; i < this.numSegment; i ++)
this.boundOffset[i] = this.boundOffsetBuff[i];
}
};
//--------------------- main ---------------------
var balls = [];
var numBalls = 18;
for (var i = 0; i < numBalls; i++) {
var position = Point.random() * view.size;
var vector = new Point({
angle: 360 * Math.random(),
length: Math.random() * 10
});
var radius = Math.random() * 60 + 60;
balls.push(new Ball(radius, position, vector));
}
function onFrame() {
for (var i = 0; i < balls.length - 1; i++) {
for (var j = i + 1; j < balls.length; j++) {
balls[i].react(balls[j]);
}
}
for (var i = 0, l = balls.length; i < l; i++) {
balls[i].iterate();
}
}
功能球(r、p、v){
这个半径=r;
该点=p;
这个向量=v;
这是maxVec=15;
this.numSegment=数学楼层(r/3+2);
this.boundOffset=[];
this.boundOffsetBuff=[];
this.sidePoints=[];
this.path=新路径({
填充颜色:{
色调:Math.random()*360,
饱和度:1,
亮度:1
},
blendMode:“打火机”,
});
对于(var i=0;ithis.maxVec)
this.vector.length=this.maxVec;
this.point+=this.vector;
this.updateShape();
},
checkBorders:function(){
var size=view.size;
if(此点x<-此半径)
this.point.x=size.width+this.radius;
if(this.point.x>size.width+this.radius)
this.point.x=-this.radius;
if(该点y<-该半径)
this.point.y=size.height+this.radius;
if(this.point.y>size.height+this.radius)
this.point.y=-this.radius;
},
updateShape:function(){
var segments=this.path.segments;
对于(var i=0;i0)?i-1:this.numSegment-1;
var offset=此.boundOffset[i];
偏移量+=(this.radius-offset)/15;
偏移量+=((this.boundOffset[next]+this.boundOffset[prev])/2-偏移量)/3;
this.boundOffsetBuff[i]=this.boundOffset[i]=偏移量;
}
},
反应:功能(b){
var dist=此点.getDistance(b点);
如果(距离
我是新手。任何帮助都将是可观的。您可以通过在路径上添加
点文本
项来显示球名,从而轻松做到这一点。下面是一个演示解决方案的示例。
下面是更新的代码(添加的行被注释)
功能球(r、p、v、名称){
这个半径=r;
该点=p;
这个向量=v;
这是maxVec=15;
this.numSegment=数学楼层(r/3+2);
this.boundOffset=[];
this.boundOffsetBuff=[];
this.sidePoints=[];
this.path=新路径({
填充颜色:{
色调:Math.random()*360,
饱和度:1,
亮度:1
},
blendMode:“打火机”
});
//创建一个文本项以显示名称。
this.text=新点文本({
内容:姓名,,
理由:“中心”
});
对于(var i=0;ithis.maxVec){
this.vector.length=this.maxVec;
}
this.point+=this.vector;
this.updateShape();
},
checkBorders:function(){
var size=view.size;
if(此点x<-此半径){
th